My grandparents like to live in a house is not very big but bright and comfortable.A. tha

问题补充：

My grandparents like to live in a house is not very big but bright and comfortable.

A. that

B. who

C. what

D. whose

答案：

(答案→)A. that

B. who

C. what

D. whose

解析：连词的用法。定语从句的连接词根据先行词来判断，先行词为人时用who或that，先行词为物时用which或that.此题中先行词house为物因此用that，故选A。